package org.example.lotterysystem.common.utils;

import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;


import org.springframework.boot.json.JsonParseException;

import java.util.List;
import java.util.concurrent.Callable;

public class JacksonUtil {
    private  JacksonUtil() {

    }

    /**
     * 单例
     */
    private final static ObjectMapper OBJECT_MAPPER;

    static {
        OBJECT_MAPPER = new ObjectMapper();
    }

    private static ObjectMapper getObjectMapper() {
        return OBJECT_MAPPER;
    }
    private static <T> T tryParse(Callable<T> parser){
       return tryParse(parser,JsonParseException.class);

    }

    private static <T> T tryParse(Callable<T> parser,Class<? extends Exception> check){
        try {
            return parser.call();
        } catch (Exception var4) {
            if (check.isAssignableFrom(var4.getClass()))
                throw new JsonParseException(var4);

        }
        throw new IllegalStateException();

    }

    /**
     * 序列化方法
     * @param object
     * @return
     */
    public static String writeValueAsString(Object object){
        return JacksonUtil.tryParse(() ->{
            return JacksonUtil.getObjectMapper().writeValueAsString(object);
        });
    }

    /**
     * 反序列化
     * @param content
     * @param valueType
     * @return
     * @param <T>
     */
    public static <T> T readValue(String content, Class<T> valueType){
        return JacksonUtil.tryParse(() ->{
            return JacksonUtil.getObjectMapper().readValue(content, valueType);
        });
    }

    /**
     * 反序列化List
     * @param content
     * @param paramClasses
     * @return
     * @param <T>
     */
    public static <T> T readListValue(String content, Class<?> paramClasses){
        JavaType javaType = JacksonUtil.getObjectMapper().getTypeFactory().
                constructParametricType(List.class, paramClasses);
        return JacksonUtil.tryParse(()->{
             return  JacksonUtil.getObjectMapper().readValue(content, javaType);
        });
    }
}
